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Harnessing waste for sustainable construction: A novel synthesizing activators from waste for one-part geopolymer concrete and evaluating its fracture toughness

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dc.citedby0
dc.contributor.authorMurali G.en_US
dc.contributor.authorKallamalayil Nassar A.en_US
dc.contributor.authorKathirvel P.en_US
dc.contributor.authorWong L.S.en_US
dc.contributor.authorKarthikeyan K.en_US
dc.contributor.authorAbid S.R.en_US
dc.contributor.authorid57203952839en_US
dc.contributor.authorid57972811000en_US
dc.contributor.authorid57871610800en_US
dc.contributor.authorid55504782500en_US
dc.contributor.authorid55618041600en_US
dc.contributor.authorid56548386400en_US
dc.date.accessioned2025-03-03T07:41:29Z
dc.date.available2025-03-03T07:41:29Z
dc.date.issued2024
dc.description.abstractGeopolymer concrete garners significant attention due to its potential to mitigate pressing global challenges, such as CO2 emissions and waste management for disposal. However, using more expensive commercial activators has posed a significant obstacle to practical implementation. Therefore, scientists want to develop methods to extract powdered activators from agricultural and industrial waste materials. To this end, the study has sought to create innovative activators derived from waste glass powder (WGP) and silica-rich rice husk ash (RHA) to create one-part geopolymer concrete (OPGC). Ground granulated blast-furnace slag is utilized as a precursor material for preparing binder, with varying ratios of WGP/RHA to sodium hydroxide (NaOH) from 0.50 to 1.75 at 0.25 intervals. Twenty-four distinct mixtures of OPGC were prepared using the materials mentioned above and evaluated for their compressive strength and fracture toughness. The primary objective of this research is to evaluate the mode I, III, and I/III fracture toughness of OPGC using edge-notched disc bend specimens. Additionally, a 1 % steel fiber dosage was introduced into the OPGC to reduce brittleness. The microstructural characteristics were examined through X-ray diffraction and scanning electron microscopy. Findings reveal that the fracture toughness of OPGC improves with the RHA to NaOH ratio up to 1.0, peaking at 1.09 MPa�m^0.5. Likewise, the fracture toughness increases with the WGP to NaOH ratio up to 0.75, reaching a peak value of 1.20 MPa�m^0.5. Beyond these respective ratios, a decrease in fracture toughness was observed. Nonetheless, incorporating fibers into OPGC consistently improved the fracture toughness across all mixtures. Mode I fracture toughness is greater than I/III and III, emphasizing the significance of Mode III compared to other fracture modes. ? 2024 Elsevier Ltden_US
dc.description.natureFinalen_US
dc.identifier.ArtNo104745
dc.identifier.doi10.1016/j.tafmec.2024.104745
dc.identifier.scopus2-s2.0-85208123296
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85208123296&doi=10.1016%2fj.tafmec.2024.104745&partnerID=40&md5=6971628c435bb3e5181f7d37b70bcd5f
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/36163
dc.identifier.volume134
dc.publisherElsevier B.V.en_US
dc.sourceScopus
dc.sourcetitleTheoretical and Applied Fracture Mechanics
dc.subjectBlast furnaces
dc.subjectBrittle fracture
dc.subjectConcrete mixtures
dc.subjectEffluent treatment
dc.subjectFracture toughness
dc.subjectGeopolymer concrete
dc.subjectIndustrial emissions
dc.subjectIndustrial waste disposal
dc.subjectSlags
dc.subjectX ray powder diffraction
dc.subjectActivator
dc.subjectGeopolymer
dc.subjectGeopolymer concrete
dc.subjectGlobal challenges
dc.subjectLoading modes
dc.subjectOne parts
dc.subjectPressung
dc.subjectRice-husk ash
dc.subjectSustainable construction
dc.subjectWaste glass powder
dc.subjectCompressive strength
dc.titleHarnessing waste for sustainable construction: A novel synthesizing activators from waste for one-part geopolymer concrete and evaluating its fracture toughnessen_US
dc.typeArticleen_US
dspace.entity.typePublication
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